live in the vineyard

If you happen to fly Southwest Airlines this spring break—or for any other reason during the first half of April—keep your camera on hand. A rock star may go all Billy Idol in The Wedding Singer and start working the crowd.

In, um, concert with Live in the Vineyard (a Napa, California, event that celebrates food, wine and music), Southwest is holding a series of surprise “Live at 35” shows, each capped at two songs just in case there are any Brahms-or-bust passengers on board. Upcoming appearances are kept a secret—with the exception of teasers on the airline’s and festival’s Facebook pages, Twitter feeds and blogs, but the past stars (see above and below) should give you some sense of who may be going through security with you.

Enter the Live in the Vineyard sweepstakes here, for the chance to win an amazing trip estimated at $3,000!